51533334 has 20 divisors (see below), whose sum is σ = 115473204. Its totient is φ = 17177724.

The previous prime is 51533333. The next prime is 51533369. The reversal of 51533334 is 43333515.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 51533298 and 51533307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51533333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 158892 + ... + 159215.

Almost surely, 2^51533334 is an apocalyptic number.

51533334 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

51533334 is an abundant number, since it is smaller than the sum of its proper divisors (63939870).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51533334 is a wasteful number, since it uses less digits than its factorization.

51533334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318121 (or 318112 counting only the distinct ones).

The product of its digits is 8100, while the sum is 27.

The square root of 51533334 is about 7178.6721613401. The cubic root of 51533334 is about 372.1311972202.

Adding to 51533334 its reverse (43333515), we get a palindrome (94866849).

The spelling of 51533334 in words is "fifty-one million, five hundred thirty-three thousand, three hundred thirty-four".